It sounds dramatic but once you remove the dash, seats, door panels and carpet the interior/body harness is pretty easily removed.

I've seen a few very clean carbed jdm vehicles. Make sure the price is right because youre converting a rhd car to a lhd harness. So there will be some creative fitment issues on flipping a usdm harness around

my EG had B16 in it, Previous owner sold the complete motor so i only have a shell. Due to budget project i have to stick with D series. I have a donor sedan but carby. I have taken out complete obd1 wiring harness which
had issues as per previous owner.

I am in need of pinout diagram specially for the top left side 02 nos. connectors ( grey and brown 12 or 16 pins.)

I'm not totally sure I follow; you you're putting the carbed D-series from the EG sedan into the EG hatch? And you want to know about using the EK sedan harness and ECU?

You can't really use any of the harnesses from the EK as they're a totally different design (1 piece vs 2 piece engine harness) Your best bet is to find an intake manifold, throttle body, fuel rail, injectors and distributor from an EG with a PGMFI D-series along with the engine harness and non vtec D15 or 1.6L SOHC ZC ECU. I'm not sure exactly what country you're in but some of the Euro EKs use a weird SFi setup, I'm pretty sure this was used exclusively on models with the D14 engine. The SFi version is extra weird and will only have 2 ECU plugs.

Buddy this Eg hatch had b16 init before, when it caught fire it burned everything inside the engine bay, dash and everything underneath.

I got this donor sedan 95 civic and i am using its wiring looms and everything from it. The only thing where i am stuck now is the greay and brown color connect 301 and 302 pinouts which i can't
find any where on the web, spent about 4 to 5 hours and no results yet.